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    <title>Single image WMS with Proj4js projection example</title>
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          <h4 id="title">Single image WMS with Proj4js projection example</h4>
          <p id="shortdesc">Example of integrating Proj4js for coordinate transforms.</p>
          <div id="docs"><p>With transparent <a href="http://proj4js.org/">Proj4js</a> integration, OpenLayers can transform coordinates between arbitrary projections.</p>
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          <div id="tags">wms, single image, proj4js, projection</div>
          <div id="api-links">Related API documentation: <ul class="inline"><li><a href="../apidoc/ol.Attribution.html" title="API documentation for ol.Attribution">ol.Attribution</a></li>,<li><a href="../apidoc/ol.Map.html" title="API documentation for ol.Map">ol.Map</a></li>,<li><a href="../apidoc/ol.View.html" title="API documentation for ol.View">ol.View</a></li>,<li><a href="../apidoc/ol.control.html" title="API documentation for ol.control">ol.control</a></li>,<li><a href="../apidoc/ol.control.ScaleLine.html" title="API documentation for ol.control.ScaleLine">ol.control.ScaleLine</a></li>,<li><a href="../apidoc/ol.layer.Image.html" title="API documentation for ol.layer.Image">ol.layer.Image</a></li>,<li><a href="../apidoc/ol.proj.html" title="API documentation for ol.proj">ol.proj</a></li>,<li><a href="../apidoc/ol.proj.Projection.html" title="API documentation for ol.proj.Projection">ol.proj.Projection</a></li>,<li><a href="../apidoc/ol.source.ImageWMS.html" title="API documentation for ol.source.ImageWMS">ol.source.ImageWMS</a></li></ul></div>
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        <form method="POST" id="jsfiddle-form" target="_blank" action="http://jsfiddle.net/api/post/jquery/1.11.0/">
          <textarea class="hidden" name="js">// Transparent Proj4js support:
//
// EPSG:21781 is known to Proj4js because its definition was loaded in the html.
// Now when we create an ol.proj.Projection instance with the &#x27;EPSG:21781&#x27; code,
// OpenLayers will pick up parameters like units and transform functions from
// Proj4js.
//
// Note that we are setting the projection&#x27;s extent here, which is used to
// determine the view resolution for zoom level 0. Recommended values for a
// projection&#x27;s validity extent can be found at http://epsg.io/.
//
// If you use Proj4js only to transform coordinates, you don&#x27;t even need to
// create an ol.proj.Projection instance. ol.proj.get() will take care of it
// internally.

var projection &#x3D; new ol.proj.Projection({
  code: &#x27;EPSG:21781&#x27;,
  extent: [485869.5728, 76443.1884, 837076.5648, 299941.7864]
});

var extent &#x3D; [420000, 30000, 900000, 350000];
var layers &#x3D; [
  new ol.layer.Image({
    extent: extent,
    source: new ol.source.ImageWMS({
      url: &#x27;http://wms.geo.admin.ch/&#x27;,
      crossOrigin: &#x27;anonymous&#x27;,
      attributions: [new ol.Attribution({
        html: &#x27;&amp;copy; &#x27; +
            &#x27;&lt;a href&#x3D;&quot;http://www.geo.admin.ch/internet/geoportal/&#x27; +
            &#x27;en/home.html&quot;&gt;&#x27; +
            &#x27;Pixelmap 1:1000000 / geo.admin.ch&lt;/a&gt;&#x27;
      })],
      params: {
        &#x27;LAYERS&#x27;: &#x27;ch.swisstopo.pixelkarte-farbe-pk1000.noscale&#x27;,
        &#x27;FORMAT&#x27;: &#x27;image/jpeg&#x27;
      },
      serverType: /** @type {ol.source.wms.ServerType} */ (&#x27;mapserver&#x27;)
    })
  }),
  new ol.layer.Image({
    extent: extent,
    source: new ol.source.ImageWMS({
      url: &#x27;http://wms.geo.admin.ch/&#x27;,
      crossOrigin: &#x27;anonymous&#x27;,
      attributions: [new ol.Attribution({
        html: &#x27;&amp;copy; &#x27; +
            &#x27;&lt;a href&#x3D;&quot;http://www.geo.admin.ch/internet/geoportal/&#x27; +
            &#x27;en/home.html&quot;&gt;&#x27; +
            &#x27;National parks / geo.admin.ch&lt;/a&gt;&#x27;
      })],
      params: {&#x27;LAYERS&#x27;: &#x27;ch.bafu.schutzgebiete-paerke_nationaler_bedeutung&#x27;},
      serverType: /** @type {ol.source.wms.ServerType} */ (&#x27;mapserver&#x27;)
    })
  })
];

var map &#x3D; new ol.Map({
  controls: ol.control.defaults().extend([
    new ol.control.ScaleLine()
  ]),
  layers: layers,
  target: &#x27;map&#x27;,
  view: new ol.View({
    projection: projection,
    center: ol.proj.fromLonLat([8.23, 46.86], projection),
    extent: extent,
    zoom: 2
  })
});
</textarea>
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    &lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
  &lt;/div&gt;
&lt;/div&gt;
</textarea>
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        </form>
        <pre><code id="example-source" class="language-markup">&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;Single image WMS with Proj4js projection example&lt;/title&gt;
&lt;script src="https://code.jquery.com/jquery-1.11.2.min.js"&gt;&lt;/script&gt;
&lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css"&gt;
&lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"&gt;&lt;/script&gt;
&lt;link rel="stylesheet" href="http://openlayers.org/en/v3.11.1/css/ol.css" type="text/css"&gt;
&lt;script src="http://openlayers.org/en/v3.11.1/build/ol.js"&gt;&lt;/script&gt;
&lt;script src&#x3D;&quot;http://cdnjs.cloudflare.com/ajax/libs/proj4js/2.3.6/proj4.js&quot;&gt;&lt;/script&gt;
&lt;script src&#x3D;&quot;http://epsg.io/21781-1753.js&quot;&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;div class="container-fluid"&gt;

&lt;div class&#x3D;&quot;row-fluid&quot;&gt;
  &lt;div class&#x3D;&quot;span12&quot;&gt;
    &lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
  &lt;/div&gt;
&lt;/div&gt;

&lt;/div&gt;
&lt;script&gt;
// Transparent Proj4js support:
//
// EPSG:21781 is known to Proj4js because its definition was loaded in the html.
// Now when we create an ol.proj.Projection instance with the &#x27;EPSG:21781&#x27; code,
// OpenLayers will pick up parameters like units and transform functions from
// Proj4js.
//
// Note that we are setting the projection&#x27;s extent here, which is used to
// determine the view resolution for zoom level 0. Recommended values for a
// projection&#x27;s validity extent can be found at http://epsg.io/.
//
// If you use Proj4js only to transform coordinates, you don&#x27;t even need to
// create an ol.proj.Projection instance. ol.proj.get() will take care of it
// internally.

var projection &#x3D; new ol.proj.Projection({
  code: &#x27;EPSG:21781&#x27;,
  extent: [485869.5728, 76443.1884, 837076.5648, 299941.7864]
});

var extent &#x3D; [420000, 30000, 900000, 350000];
var layers &#x3D; [
  new ol.layer.Image({
    extent: extent,
    source: new ol.source.ImageWMS({
      url: &#x27;http://wms.geo.admin.ch/&#x27;,
      crossOrigin: &#x27;anonymous&#x27;,
      attributions: [new ol.Attribution({
        html: &#x27;&amp;copy; &#x27; +
            &#x27;&lt;a href&#x3D;&quot;http://www.geo.admin.ch/internet/geoportal/&#x27; +
            &#x27;en/home.html&quot;&gt;&#x27; +
            &#x27;Pixelmap 1:1000000 / geo.admin.ch&lt;/a&gt;&#x27;
      })],
      params: {
        &#x27;LAYERS&#x27;: &#x27;ch.swisstopo.pixelkarte-farbe-pk1000.noscale&#x27;,
        &#x27;FORMAT&#x27;: &#x27;image/jpeg&#x27;
      },
      serverType: /** @type {ol.source.wms.ServerType} */ (&#x27;mapserver&#x27;)
    })
  }),
  new ol.layer.Image({
    extent: extent,
    source: new ol.source.ImageWMS({
      url: &#x27;http://wms.geo.admin.ch/&#x27;,
      crossOrigin: &#x27;anonymous&#x27;,
      attributions: [new ol.Attribution({
        html: &#x27;&amp;copy; &#x27; +
            &#x27;&lt;a href&#x3D;&quot;http://www.geo.admin.ch/internet/geoportal/&#x27; +
            &#x27;en/home.html&quot;&gt;&#x27; +
            &#x27;National parks / geo.admin.ch&lt;/a&gt;&#x27;
      })],
      params: {&#x27;LAYERS&#x27;: &#x27;ch.bafu.schutzgebiete-paerke_nationaler_bedeutung&#x27;},
      serverType: /** @type {ol.source.wms.ServerType} */ (&#x27;mapserver&#x27;)
    })
  })
];

var map &#x3D; new ol.Map({
  controls: ol.control.defaults().extend([
    new ol.control.ScaleLine()
  ]),
  layers: layers,
  target: &#x27;map&#x27;,
  view: new ol.View({
    projection: projection,
    center: ol.proj.fromLonLat([8.23, 46.86], projection),
    extent: extent,
    zoom: 2
  })
});

&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;</code></pre>
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